Finding the Fourth Proportional to 31,669.31, 43,709.01 and 18,238.09

Step by Step Solution

1. Step 1: Write the proportion equation
   31,669.31 : 43,709.01 = 18,238.09 : x
2. Step 2: Convert to fraction form
   31,669.31/43,709.01 = 18,238.09/x
3. Step 3: Cross multiply
   31,669.31x = 43,709.01 × 18,238.09
4. Step 4: Simplify right side
   31,669.31x = 797,168,767.00
5. Step 5: Solve for x
   x = 797,168,767.00/31,669.31
6. Step 6: Final answer
   x = 25,171.65